$225 Cheap Flights from Washington (DCA) to Helena (HLN)

View $225 flight on Tue, Sep 9, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Helena, MT (HLN-Helena Regional)

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Cheap Flights from Washington to Helena (DCA-HLN)

Prices were available within the past 7 days and start at $225 for one-way flights and $442 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Hawaiian Airlines
Wed, Oct 15 - Mon, Nov 3
DCA
Washington
HLN
Helena
$442 Roundtrip, found 1 day ago
$442
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Wed, Oct 15 from Washington to Helena, returning Mon, Nov 3, priced at $442 found 1 day ago
Alaska Airlines
Wed, Oct 22 - Mon, Nov 10
DCA
Washington
HLN
Helena
$443 Roundtrip, found 1 day ago
$443
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Oct 22 from Washington to Helena, returning Mon, Nov 10, priced at $443 found 1 day ago
Hawaiian Airlines
Sun, Nov 2 - Tue, Nov 18
DCA
Washington
HLN
Helena
$460 Roundtrip, found 1 day ago
$460
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sun, Nov 2 from Washington to Helena, returning Tue, Nov 18, priced at $460 found 1 day ago
Delta
Thu, Nov 27 - Tue, Dec 16
DCA
Washington
HLN
Helena
$470 Roundtrip, found 1 day ago
$470
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Nov 27 from Washington to Helena, returning Tue, Dec 16, priced at $470 found 1 day ago
Hawaiian Airlines
Thu, Oct 30 - Mon, Nov 17
DCA
Washington
HLN
Helena
$480 Roundtrip, found 1 day ago
$480
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Thu, Oct 30 from Washington to Helena, returning Mon, Nov 17, priced at $480 found 1 day ago
United
Tue, Jan 27 - Fri, Feb 6
DCA
Washington
HLN
Helena
$488 Roundtrip, found 2 days ago
$488
Roundtrip
found 2 days ago
Select United flight, departing Tue, Jan 27 from Washington to Helena, returning Fri, Feb 6, priced at $488 found 2 days ago
Alaska Airlines
Tue, Jan 27 - Fri, Feb 6
DCA
Washington
HLN
Helena
$492 Roundtrip, found 2 days ago
$492
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, Jan 27 from Washington to Helena, returning Fri, Feb 6, priced at $492 found 2 days ago
Delta
Thu, Nov 27 - Wed, Dec 17
DCA
Washington
HLN
Helena
$493 Roundtrip, found 1 day ago
$493
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Nov 27 from Washington to Helena, returning Wed, Dec 17, priced at $493 found 1 day ago
Delta
Tue, Sep 2 - Sat, Sep 13
DCA
Washington
HLN
Helena
$508 Roundtrip, found 6 days ago
$508
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Sep 2 from Washington to Helena, returning Sat, Sep 13, priced at $508 found 6 days ago
Alaska Airlines
Tue, Sep 2 - Sat, Sep 13
DCA
Washington
HLN
Helena
$525 Roundtrip, found 6 days ago
$525
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Tue, Sep 2 from Washington to Helena, returning Sat, Sep 13, priced at $525 found 6 days ago

Alternative airports near Helena

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Helena Regional HLN. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $5,506
HLN
Helena Regional
CheapestClosest
Average driving time to city center7 min
Flights from $5,506
Flights from Washington (DCA) to Helena (HLN)
Origin airport
Ronald Reagan Washington National
Destination airport
Helena Regional
Airlines serving
Alaska Airlines, Delta, United
Roundtrip price
$442
Distance
1835 mi

Washington to Helena Flights

The cheapest times to fly from Washington to Helena

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Helena are during the month of October. You can find some of the cheapest flights from Washington to Helena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Helena

Sunday is one of the best days to book for cheap flights from Washington to Helena: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Helena

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Helena in 2025. You can also book with separate airlines for your outbound and return journeys, from $225 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Helena flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Helena airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Helena Regional Airport (HLN) cost?
Discover the latest flight deals from DCA to HLN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DCA to HLN?
The cheapest flights from DCA to HLN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from DCA to HLN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from DCA to HLN. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Helena Regional Airport (HLN)?
Direct flights from Ronald Reagan Washington National Airport (DCA) to Helena Regional Airport (HLN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DCA to HLN?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change based on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Helena Regional Airport (HLN)?
Choose a flight from Ronald Reagan Washington National Airport (DCA) to Helena Regional Airport (HLN) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Helena Regional Airport (HLN) last-minute?
Holding off until just before your departure to book a ticket from DCA to HLN generally means paying more. While it's possible to find some last-minute deals, there's no guarantee. Be flexible with your itinerary for the best chance of scoring a bargain.
Is it cheaper to book a DCA to HLN flight and hotel package?
Compared with arranging flights and hotels separately, booking a DCA to HLN flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one place will take the stress out of planning your trip. Just pick your flights and choose from our wide range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Helena Regional Airport (HLN)?
Typically, you can modify or cancel your DCA to HLN flight. However, there may be additional fees, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want further details, visit our Customer Service portal.

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*Available to One Key members.